callback

支持X/YModem和cis_b+协议的串口通讯程序

#!/bin/sh
# @(#) callback - JPRadley v1.0 920921 - makes and uses an 'xc' script to
# @(#)   call a remote site, have it ring us back with a login prompt.

echo -n "Remote system name? "
read SYSTEM                     # where are we calling?
echo -n "Their modem number? "
read NUMBER                     # what's the telephone number?
echo -n "Login name on $SYSTEM? "
read LOGIN                      # how shall we log in?
echo -n "Password for $LOGIN? "
stty -echo                      # but of course!
read PASSWD
stty echo
echo -n "\nBaud remote should use? "
read RSPEED                     # computer-modem speed on the remote
echo

What_To_Do=/usr/tmp/$SYSTEM.$$  # script for 'xc' to use
OURPORT=ttyA02                  # we'll dial out on this port and the remote
OURNBR=7874639                  #  calls this number to ring this port
CAPTURE=/pub/jpr/logs/$SYSTEM   # our log file for the session

trap "rm $What_To_Do" 0         # clean up when we leave

cat >$What_To_Do <<TeMpLaTe
debug "off"
tty "off"
set cfile $CAPTURE                
set auto "off"                  # no capturing -- yet
set cis "off"                   # don't react to a spurious ^E

transmit "ats0=0e1q0v1^M"       # modem should not be mute
waitfor "ok"

dial "$NUMBER"
echo "        Dialing $NUMBER to get on to $SYSTEM"
while ! waitfor "connect" 70
do
        echo "        No connection; redialing"
        redial                        
done

transmit "^M"                   # can't hurt

assign PATIENCE eq 3            # loop counter
while ! waitfor "ogin:" 6       # waiting 6 secs for the prompt
do
        if PATIENCE eq 0
        then    echo "Can't get a login prompt"
                beep; quit
        fi
        xmitbrk
        decr PATIENCE
done

pause 2

transmit "$LOGIN^M"
echo "        We're logging in now"

if ! waitfor "word:"
then
        echo "Login failed, sorry!" ; beep; quit
else
        transmit "$PASSWD^M^M"  # the second CR is to cope with a possible
endif                           #  tset command, and accept its default

transmit "/1/2/3^M"             # an absolute pathname that shouldn't exist
if waitfor "not found"
then
        echo "        OK, we're on $SYSTEM; now we'll set up a callback"
else
        echo "Login failed, sorry!" ; beep; quit
fi

transmit "echo 'yes|ct -w3 -s$RSPEED $OURNBR 2>/dev/null' | at now next min^M"
waitfor "job"                   # the 'at' command reports a job number
transmit "exit^M"               # get off the remote system

pause 2                         # disconnect might reset modem, so again:
transmit "ats0=1e1q0v1^M"       #  not mute, and auto-answer
waitfor "ok"

echo "        It might be a couple of minutes until $SYSTEM rings us"
if ! waitfor "connect" 190
then
        echo "        It ain't gonna happen; sorry!"
        beep; quit
endif

transmit "^M"
assign PATIENCE eq 3
while ! waitfor "ogin:" 6
do
        if PATIENCE eq 0; then beep; quit; fi
        xmitbrk; decr PATIENCE
done
pause 1; transmit "$LOGIN^M"
if ! waitfor "word:"; then beep; quit
else transmit "$PASSWD^M^M"
fi

set auto "on"                   # capturing starts when we hit terminal mode

transmit "/1/2/3; echo Thanks, \`uname\`, for providing this connection!^M"
waitfor "not found"
beep
TeMpLaTe

xc -s$What_To_Do -l$OURPORT

# th-th-aaa-t's all, folks, just drop those nickels & dimes in the slot...

# eof(callback)